Lubricator



July 12, 1938. w. NOBLE 2,123,197

LUBRICATOR Filed Dec. 1S, 1934 2 lsheets-sxwe'c 1 Hf Tl' ff//l/l//Z// 27a4 i INVENTOR.

wanen Nubie BY /l' Wwn.

ATTORNEY July 12', 193s. w NBLE 2,123,191

' LUBRICATOR y FiledDec. 18, 1.934` 2 Sheets-Sheet 2 $2727 2526 ze a4 e4Aiygl.

INVENTOR.

` Patented July 12,-'1938 p 2,123,191 culminaron Wn Noble, MichiganCity, ind., assigner to Sullivan'Machinery Company, a corporation oiMassachusetts This 'invention relates to lubricators, and moreparticularly to improvements in a self-driven 1ubricator unit of generalapplicability.

' In. very many types of machinery, and especialvly those air-driven formining and rock cutting, adequate and reliable lubrication, on whichbetter performance, greater reliability and longer life are dependent,is still relatively unattained. In rock tools, especially, lubricationis particularly haphazard, usually depending upon slight pressuredierences set by the ilow of air inthe portings of the machine.Quantitatively it varies with the prime air pressure, the character ofthe edges, forms and surfaces of the ports conceived, the manufacturingclearances between associated parts, and in general, is non-susceptibleto close control. Insome cas'es a new tool lubrlcates less perfectlythan an old one; a worn tool .will drain its oil reservoir withouttaking care of the mustlie-lubricated surfaces. Diminishing performance,short life and high repair charges are inevitably invited. In othermachines special conditions make it desirable to deliver a meteredquantity of oil, starting ,and varying with the machine perfomance, andwhile the common form'bi ratchet-driven lubricator can sometimes bearranged'to deliver oil suitably, it still suiiers from many limitationsthat the improved selfdriven lubricator Aunit of the present inventionis designed to overcome. e

VAn object of this invention is\tc provide an improved self-drivenlubricatcr unit' whereby the inadequacies mentioned above are, to agreat extent, overcoxne. Another object of this invention is to providean improved self-driven lubricator unit having embodied therein avself-contained motor driven pump whereby cw of lubricant to the variousparts of the machine to be lubricated is insured. Yet another object isto provide an improved self-driven lubricator unit of an extremelycompact design having embodied therein a miniature driving motor andpump mechanism .whereby lubricant is positively pumped to the tast:starts-auwmancany with the new in s. pilot' passage and stopsautomatically when the ilow ceases, the unit being entirelyself-contained and adapted for association with ilow passages ofmachines'of various characters. Yet another object is to provide animproved self-driven lubricator adapted, irrespective of its supportedposition, automaticallyl to supply lubricant to the moving parts of themachine to be lubricated. These and other objects and advantages of theinvention will, however, hereinafter more fully appear.

In the accompanying drawings there is shown for purposes ofillustration'one form which the invention may assume in practice.

In these drawings,-

Fig. 1 is an end elevational view of the illustrative form of theimproved lubricator unit.

Fig. 2 is a side elevational view of the lubricator unit shown in Fig.l, in supported relation with a part of the machine to be lubricated.

Fig. 3 is a view in longitudinal section taken substantially on line 3-3of-Fig. 1.

Fig. 4 is an enlarged sectional view showing a portion of the lubricatorcontrol valve means.

Fig. 5 is a cross sectional view taken on line 5 5 of Fig. 3.

Fig. 6 is a cross sectional view taken on line -S of Fig. 3.

Fig. 'l is a cross sectional view taken on line l-l-of Fig. 3.

Fig. 8 is a cross sectional view taken on line of Fig. 3.

Figs. 9 and l0 are views similar to Fig. v6, showing the moving motorand pump parts in different y positions.. Fig. 1l is a longitudinal lineii--ii of Fig. 9.

Fig. l2 is a longitudinal line i2- -i2 of Fig. l0. l

Fig. 13 is a detail sectional view taken on line (i3-i3 ofFig. 6. s

Fig. 14 is a perspective view ci the valve bush-4 ing.

Fig. 15 is a perspectiveview of the control valve element'.

, Inthis illustrative embodiment of the invention, there is shown aself-contained, self-driven. lubricator unit, generally designated i,comparable in size tofan automotive spark plug, which' consists of atiny engine-driven pump, whose engine is designated 2, complete initself with all necessary associated functions, except tankage, thatstarts automatically with the now in the pilot passage@ and stopsautomatically when sectional view taken on the new ces. 'I he amount ofoildelivered is sectional view taken on regulated by varying the speedof the engine by raising or lowering the back pressure of the exhaustmotive iluid.

As illustrated, the improved lubricator vunit comprises a. body 4,herein preferably made of a free-cutting, case hardened steel, threadedat I5 similarly to a metric, automotive spark plug, this size beingchosen for ease of obtaining good taps and dies for manufacture of thethread, and on account of the world-wide-distribution of copper asbestosgaskets for this size. Formed on the lubricator casing 4 is a gasketshoulder 8 and a larger step and shoulder 1, the shoulders 8 and 'Ibeing spaced before. and beyond a circumferential groove 8 communicablewith a suitable lubricant reservoir R and, in this instance,circumscribed `by a illter thimble 8. As clearly shown in Fig. 3, thisthimble, which is preferably a brass shell, is formed with a doubleinternal diameter to nt snugly the steps on the lubricator casing andenclose the circumferential groove 8. The zone circumscribing the groove8 is divided into a series of louvre-like bars I slit from the shell,one set being raised outwardly from the smaller diameter of the shell insuch a way as to leave narrow interstices II between the bars of thecage so formed. By making the difference in the diameter slightly morethan twice the thickness of the stock from which the shell is drawn, itthus becomes possible to establish an oil filter unit with ilowapertures of known dimensions. The outer flange I2 of the oil filterunit is corrugated at I3 to provide resiliency in order to compensatefor slight differences in dimension of the lubricator casing as regardsthe shoulders 6 and 1 holding the lter thimble in place. The lubricatorcasing is formed of hexagonal shape at I4 for the reception of a wrench,beyond which is a circular head I5 in which the recesses for the workingparts of the lubricator are housed.

In a bore I6 axially traversing the entire casing body lies a bushing IIgiving support to a crank shaft I8 of the pump driving motor 2, thiscrank shaft having an overhung crank pin I9. 'I'he crank shaft I8 isbored throughout its length at 20 to pass motive uid, herein pressureair, and is also drilled'obliquely at 2I to feed a. right angle airdistribution port 22 located midway oi' the crank pin length andcommunicating with la supply port 23. 'Ihe supply port 23, and anexhaust port 24, are formed by milling narrow,

round bottom grooves normal to the axis of the crank pin and of such adepth that the section of the shaft remaining between the two grooves isonly very slightly in excess of the diameter of the radial holes 25drilled through a bushing 26 surrounding the pin. The bushing 26 forms abearing in which the crank pin may rotate and also provides the headsfor motor cylinders 21 bored in a cruciform block 28, the bushing beingfixed within the block in a suitable manner. As shown in Fig. 6, thiscylinder .block 28 has three similar arms or cylinder barrels 29 and a.fourth arm or cylinder barrel 30 of somewhat greater length than theother three cylinder` barrels; and this fourth longer barrel isaccurately ground to two external diameters at 3l and 32 to form thepiston of the oil pump. The difference in area between f these twodiameters represents the piston area available for oil pumping. In orderthat the impulses from all four of the driving cylinders shall beentirely similar, a longer piston 33 is reciprocably Imounted in thebarrel 30, while shorter pistons 34 are reciproaiaarav cably mountedinthe other three shorter cylinder barrels. The four pistons are shapedto engage slidingly the walls 33 of the chamber 34 in which the motorand pump are arranged so that when the cylinder block moves about anaxis coincident with the crank shaft axis, relative reciprocationbetween the cylinder barrels and the pistons occurs. The longer piston33 is ilttedrin the interior of the fourth. longer barrel 30, and themating pump cylinder is made by boring transversely a sliding block 3'I.This block, circular in cross section, as shown in Fig. 11,.Is boredwith two diameters necessary to fit closely the steps 3l, 32 of the pumpplunger leg 34 of the cylinder block 28; and its duty, apart from itsfunction as a pump cylinder and valve slide, is the maintenance of thecruciform cylinder block 28 in constant relation to the crank shaft.

As the 'crank shaft I3 rotates, manifestly the cylinder block 28 movestherewith about an axis coincident with the crank shaft axis, so slidingthe pump leg 33 in and out of vthe sliding block 31 and at the same timetraversing this block from side to side. The sliding block 31 slidesthrough a distance equal to the throw of the crank shaft, and the pistonor plunger 30 that it contacts slides through an equal distance at rightangles thereto. The combinationof rotation and sliding thus set upenables the engine to function by reaction through its pressure urgedpistons, upon the walls 35 of the casing chamber 36 in which the wholemechanism is contained. The rotation of the crank pin I3 within thesurrounding bushing 26 that forms the inner heads of the cylinders ofthe pump barrels provides vfor properly timed intake and exhaustfunctions, rotation of the crank pin moving the supply and exhaust ports23 and 24 in timed relation` with respect to the ports 25 in thebushing. The motion of all the parts is a replica of the true `harmonicof the crank pin movement as, related to either horizontal or verticalplanes. being modi-y fied only in that the pistons are permitted to abutand consequently slide upon walls 3l of the cncavity of the containingchamber 38, a circumstance that modifies their motion with relation tothe true harmonic without affecting Ithe total stroke and withoutperceptible ei'l'ect upon the action of the entrained air. The course ofthe working air, after entering the crank shaft bore 20, is rst to thecrank pin and to the timing port, ythence to the cylinders\'(when themotor is running there are. at all times two cylinders contributing tothe torque) and then from the cylinders in which it has performed itswork laterly to the exhaust space 38 surrounding the'cylinder block viathe exhaust port'24 obverse to the intake 23 in the -.crank pin and adrill hole 38 in the pin end; thence to an exhaust control valve 38which consists of a plug 43 close-fitted in a hole 4I bored betweenthe-face of the main body and the clearance-cylinder surrounding thepump leg of the cylinder block. This plug 4I has a cross hole 42 and ascrew driver slot 43 wide enough to be turned by theedge of a smallcoin, if desired. When this plug 46 is rotated in one direction, itmakes more free the passage from the casing Ato the outerair;contrawise, it reduces the freedom of communication -with the 'aperture44 available for exhaust, and by raising aiaaie? the sndnig vlve blocka1 which has a. hole 45 located in its transverse central planecommunicating, as to the valve block, with the differential pump barrel30, and as to the body, alternately with one or the other of two drilledpassages 46 and 41 vcommunicating respectively with the source ofthe*incoming oil and the discharge passage for the oil leaving the pump.Communication with these passages isalternately setup by thereciprocation of the sliding block 31 as the crank shaft turns. Oilcoming to the pump is drawn from the lubricant reservoir R derived andinto which the metered lubricating oil is to be discharged.

Arranged at the threaded end 5 of the lubricatorcasing and projecting inthe pilot passage 3 is' a flow sensitive valve 55. This valve, slightly.

smaller than the crankshaft diameter, is assembled with the crank shaftby means of a cross pin V56, which passesv through an oversizeA hole 51in the'valve ,shank 58, though tight in,

the crank shaft itself. The endl of the -crank shaft I8 isformed asaflat'valve seat 59 lapped true and highly finished. Opposed to it onthe control valve is a similar face 69 in cooperation acting to seal theentrance of the crank shaft I8 against admittance of the surroundingpressure air. The outer end of this pilot valve, which in generalcoincides with theaxis ofthe flow passage 3, is formed as a sphere at6I, the.

bar 62 between the sphere and the valve head 55 f being relativelyslender. With quiescent air in 'the passage 3, the form of the sphericalvalve head and bar is without influence and the valve 55 acts inconjunction with the end of the crank shaft merely as a. check valve.When, however, vairv starts to flow in the conduit 3, the restriction ofthe passage created by the presence of the body of the pilot valve,together with the aero- Vdynamic properties of the v'alve itself, causea for .the use of'screws, springs or other holding devices which mightunlock,l.break or be'endangered by vibration. 'I'he sliding -block 31.is inserted in its bore, and then the cruciform cylinder block 28,assembled with its pistons, is introducedpart wayin the valve block 31,this be,-

ing. done with its cylinder `block normal to its nal position. .'I'hecrank shaft bushing l1l is at this time lacking, although the crankshaft I8 has I been completely assembled with the pilot valve 55. Arecess 64 suiiiciently deep toA permit the crank pin to be dropped downventirely out of the way of the cylinder block as it is swung into itsworking plane, is formed 'in the lubricator casing. Into this recessthecrank shaft is loosely set and once in this position the bushing I1is slipped over the crank shaft I8and brought into place, thus locatingthe shaft properly in all directions with respect to the rest of themechanism. The cross pin 65, as shown in Fig. 4, is inserted within thealined openings in the casing and bushing I1 and staked into place forfinal retention. The lubricator casing is counter-bored at 665 torshoulder a pair of brass rings 6], 61 with ytheir associated corkwashers 68, 68 and a thick plane glass medallion 69 shared between them.The center extension 10 of the crank pin, actually an extension of thecrank shaft, has its end madetruly flat and its cross section slightlyless than a complete circle. Highly polished, it is employed as althrust bearingin direct contact with the glass plate69, and the staticthrust of the" crankshaft is taken by the'crank pin extension againstthe glass medallion. The glass medallion 69 thus closes thechambering'within the lubricator casing and acts as an inspectionportand supports this duty.` The sub-assembly comp1'ete,an outer.

case ring 1l,'a carburized and hardened steel ringv capableiofwithstanding great abuse, is pressed into place on the exterior of the'casing 4 enclosing the pump chamber 36, and, whenthus placed,

, locked and certiiied4 by means ofalead-wire seal 12. On theiace ofthisfsteel ring vare the necessary indiciarelating to thel supply of oiland the makers style and number. A Where the glass medallionJ 69 isconsidered undesirable or unnecessary, itsplacemay be taken by ametallic plate or the chamberingfor the glass 'and thebezel bore in thecase ring 1I entirely eliminated.

The general mode of operation of the improved lubricator unit will beclearly-apparent# from the description given. As shown in Fig. 2, thelubricator unit is suitably secured into placefwithin a suitablethreaded opening formed in 'the casing of the machine to be lubricatedwith' the control portions 6I, 62 of the control valve55 projectingwithin the pilot passage 3 in the manner shown.

When the air pressure in the passage 3 vis quicscent, the entirelubricator unit is shut down and no fiow of lubricant takes place.However, when the machine to be lubricated is started and a flow ofpressure fluid occurs inthe'passage 3, the valve 55 is tilted by theaction of the owing iiuid on the control portion 6I, 62 of the valve,thereby permitting flow of pressure iiuid past the valve through thepassage 20 in the crankr shaft I8,

through the passage 2|, port 22 port 23 'and through the 'ports in thebushing 26 to the cylinders of thel motor, the pressure fluid acting onthe inner pressure areas of the motor cylinders to effect rotary motionof the cylinderblock 28 within the chamber 36. This rotary motion of.the cylinder block causes reciprocatorymotion of the valving block 31,controlling( its discharge of lubricant from the pump barrel through thedischarge passage to the chamberl 58 and thence through thehelicalgrooves 52 on the bushing I1 to discharge into the air flowpassage 3,'the discharging lubricant being entrained bythe flowing .airto the. various parts of the machine to be lubricated. It will thusbeseen `that the improved lubricatoris entirely; self-contained, isself-driven', and embodies its.own'motor,driven pump so thatthe entireunit maybe attached in various locations with-respect to variousmachinesto supply lubricant, irrespectiveof `its attached position, toVany passage through which pressure fluid flows. These and other uses andadvantages of the improved lubricator will be.

clearly apparent to those skilled in the art.

While there is in this application specifically described one form whichthe invention may assume in practice, it will be understood-that thisand embodied in various other forms without departing from its spirit orthe scope of the append-v 5 ed claims.

What I claim as new and desire to secure by 'Letters Patent is: l

1. In a self-contained lubricator unit adapted for connection to apressure iluid supply line, a

10 .casing having a chamber, a motor driven pump arranged in saidchamber and having lubricnt intake and discharge passage means, saidlubricant discharge passage means discharging intoV the supply line, apressure iluid actuated driving motor in said chamber for driving saidpump, and valvemeans for controlling the flow of motive fluid from thesupply line to said motor, said pump con-.- stantly operating to eilectits lubricant pumping function during iiuid ilow in said supply line.

2. In a self-contained lubricator unit adapted for connection to apressure iluid supply line, a casing havingla chamber, a motor drivenpump arranged in said chamber and having lubricant intake and dischargemeans,a pressure iluid actuated driving motor in said chamber i'ordriving said pump, valve means for controlling the flow oi.' motivefluid from the supply line to said motor. and valve means forcontrolling the motor exhaust to vary the motor speed.

3. In a lubricator unit, a casing having a chamber and communicable witha passage in which motive i'iuid is adapted to flow, a fluid vactuatedmotor in said chamber, a lubricant pump driven by said motor, passagemeans for supplyingv motive iluid from the ilow passage to the intakeo!the motor, valve means Vcontrolled by the flow o! iiuid in the ilow'passage for controlling. the ilow ot motive fluid to said motor. andlubricant intake and discharge passage means for said pump.

4; In s. lubricator, a casing having a chamber f and communicable with apassage in which motive fluid is adapted to iiow, a fluid actuated motorin said chamber. a lubricant pump driven by said motor, passage meansfor supplying-motive iiuid sa yirom the ilow passage tc the intake oithe motor,

valve means controlled Vby theilow of fluid in the iiow passage'iorcontrolling the Vilow of motive iluid to the intake passage means ofsaid motor,

lubricant intake and discharge passage means i'cr ga said pump. andvalve means for controlling the motor speed by varying the motorexhaust.

6. In a self-driven lubricator, a lubricator casing. a fluid actuatedmotorin said casing. a pump in said casing and driven by said motor.intake sg and discharge passage means for said pump,

motive fluid intake and discharge passage means for said motor, andvalve means for .controllingl the iicw o! motive iiuid to said motorintake passage means automatically in accordance with the requirementsof a machine to be lubricated, said motor operating constantly toeii'ect actuation of said pump and said pump constantly operating toeil'ect its lubricant pumping function to supply lubricant to themachine to be lubricated during operation o! the latter. B. In aseit-driven lubricator, a lubricator casing, auid actuated motor in saidcasing, a pump driven by said motor, lubricant intake and dis-v chargepassage means for said pump, motive duid intake and discharge passagemeans -for said motor.A valve means iorcontrolling the flow oi motiveiluid to-said motor intake passage means automatically in accordancewith the require- .ments of a machine to be lubricated, 'and meanscommunicate with a commonpassage through cant intake and discharge -lmeans lorsaid motor.

f tor said pump, and motive iiuid intake and disfor regulating the.motorexhaust vary the motor speed.

7. In a sell-driven lubricator adapted tor ccnnection to a pressurefluid supply line, a casing,

apressure fluid actuated motor in said casing and ii` .throughsaidsupply line..

8. In a self-driven lubricator. a casing, a uid actuatedmotor in saidcasing comprising means providing a motor chamber containing a movablemotor piston, a pump in said casing and driven by said motor, lubricantintake and discharge passage means for said pump, and motive duid intakeand discharge passage means alternately communicating with the motorchamber of said motor, the lubricant discharge passage means and themotive nuid intake passage means having terminals located in adiacency'and adapted to which motive fluid continuously iiows during op- Aeration of a pressure iiuid actuated machine tc be lubricated. l

9. In a self-driven lubricator', a casing, a iiuid actuated motor vinsaid casing. a pump in said casing and driven by said motor, lubricantintake anddischarge passage means lor said pump.

motive .iiuid intake and discharge passagemeans for vsaid motor, thelubricant discharge passage means and the motive iiuid intake passagemeanshaving terminals lodated in adiacency and adapted to communicatewith a common passage through which motive fluid is adapted to iiow. andvalve means controlled by thenow of pressure through vsaid passage forregulating the ilow of iiuid to the motive fluid intake passage means.

10. In a sell-driven lubricatona casing, a duid actuated motor in saidcasing, a pump in said casing and driven by said motor, the pistonelement of Said pump constituting a cylinder element of said motor.lubricant intake and discharge passage means lor s'aid pump. and motivenuidintake and Adischarge passage meanstor said motor.

. 11. In a self-driven lubricator, a casing. a duid actuated motor insaid casing. a-pump in said casing and driven by said motor. said motorcomprising a cylinder block movable about an axis and having cylindersin which pistons are ccntained. said cylinders and pistons beingrelatively reciprocable and s. cylinder of said motor ccnstituting thepiston element of said pump. lubripassage means -ior said pump. andmotive duid intake and discharge 12. In a seit-driven lubrlcatcr. acasing. a duid actuated .motor in said casing and having a tabular crankshams-pump driven by said motor. lubricant intake and-discharge passagemeans 0 charge passage means for said motor. the motive 7 iluid intakepassage means including the passage in said tubular crank shalt. f

18. In a sell-driven lubricator, a casing, a duid actuated motor in saidcasing and having la a tubular crank shaft, a pump driven by said motor,lubricant intake and discharge passage means for said pump, motive uidintake and discharge passage means for said motor, the motive fluidintake means including the ,passage in said tubular crank shaft, and avalve seated-on the end of said crank shaft for controlling the flow ofmotive fluid therethrough to said motor. 14. In a lubricator unit, acasing connectible with-alubricant reservoir and a pressure fluidconducting passage, a pressure fluid 4actuated motor lin said casing', apump in said-casing and driven by said motor, lubricant 'intake anddischarge passage means for said pump communicating-respectively withsaid reservoir and-said iiuid conducting passage, motive. fluid 4intakepassage means for supplying uid from said uid conducting passage to saidmotor for vactuating the'latter, and motor exhaustI passage means, 'saidmotor loperating constantly to effect actui ation ofsaidV pump and saidpump'constantly operating to Yeffect its lubricant pumping functionduring flow of fluid in said fluid conducting passage and irrespectiveofv the supported position of the lubricator unit.

. with a lubricant reservoir and a pressure uid conducting passage, apressure uid actuated motor in said casing, va pump in said casing anddriven by said motor, lubricant intake and discharge passage meansfor-saidl pump communicatingrespectively with said reservoir and saiduid passage, motive uid intake passage means for supplying iiuid 'fromsaid fluid passage tosaid motor for actuating the latter, motor exhaustpassage means, and means for governing the flow o f uid to said motorcontrolled by uidow in saidpassage.

16. In a lubricator unit, a casing connectibleV -for supplying iiuidfrom said fluid passage to said motor for'actuating the latter, motorexhaust passage means, means for governing the ow of uid to said motorcontrolled by fluid flow in said passage, and means for regulating themotor exhaust to vary the motor speed.

17. In a lubricator adapted for connection to a pressure fluid supplyline, a lubricator casing,

a motor driven pump in said casing and having lubricant intake anddischarge passage means, a pressure uid actuated motor in said casingfor driving said pump, and valve controlled means for supplying pressure:duid from theA supply line to said motor automatically upon ow ofpressure uid through the supply line, said pump constantly operating toeffect its lubricant pumping function to discharge lubricant to thesupply line duringiow of pressure fluid from lubricant intake anddischarge passage means,

a pressure uid actuated motor in said casing for driving said pump,-passage means in ,said

casing for supplying pressure fluid from the'supply line to said motor,and valve means regulated automatically by the flow of pressure fluidthrough the supply line for controlling the :dow

for driving said pump, passage means in said casing for supplyingpressure fluid from the supply line to said motor, and valve means regu-Jof pressure fluid in said pressureiluid .supply lated automatically bythe flow of pressureuid through the supply line for controlling the flowof pressure fluid in said pressure iiuid supply passage-means, saidvalve having an actuating portionprojecting within the supply line andupon which the flowing pressure fluid in the supply line acts.

20. In a lubricating means, the combination witha conduit through whichpressure fluid flows, of a lubricator unit connected to said conduit andembodying a motor driven lubricator pump actuated bythe pressure fluidin the conduit and constantly operating to effect its lubricant pumpingfunction to supply lubricantvto the conduit whenever flow of pressurefluid through the latter occurs and irrespective of the supportedposition of the lubricator unit.

21. In a. lubricator unit, a casing having a chamber and communicablewith a passage in which motive uid flows, a motor in said chamber andhaving a motive fluid intake, a lubricant pump driven by said motor andhaving lubricant intake and discharge passage means, and passage meansfor supplying motive fluid from the flow passage to the intake of themotor, said pump constantly operating to effect its lubricant pump- 1ing function to discharge lubricant to said motive fluid passage duringflow of 4motive uid tov said l motor intake passage means and regardlessof the supported position ofthe lubricator unit.

22. In a lubricator' unit, a casing having a chamberand communicablewith ay passage in which motive fluid flows, a fluid ,actuated motor insaid chamberand having a motive uid intake and exhaust, a lubricant pumpdriven by said `motor and having lubricant intake and discharge 23. In aself-driven lubricator, a. casing, a uid actuated motor in said casingcomprising meansproviding a motor chamber containing a movable motorpiston, a pump in said casing and driven by said motor, an element ofsaid pump constituting an element of said motor, lubricant intake'anddischarge passage means for said pump, and motive uid intake anddischarge passage means alternately communicating with the pistonchamber of said motor, said pump operating constantly to effect itslubricant pumping function to discharge lubricant during iiow of motivefluid to said motor intake passage means. 24. In a self-drivenlubricator, a casing, a iiuid' actuated motor in said casing comprisingmeans providing a motor chamberV containing a movable motor piston, apump in said casing and drivenby said motor, said motor including amotor element movable about an axis and constituting anelement of saidpump,lubricant intake anddischarge passage means for said pump, andmotive iiuid intake and discharge means alternately communicating withthe piston chamber of said motor.

25. In a self-driven lubricator, 4a lubricator casing, a'iluld actuatedmotor in said casing and comprisinglmeans Aproviding a motor chambercontaining a movable motor piston, a lubricant pump in said casing anddriven by said motor. lubricant intake and discharge passage means forsaid pump. and motive fluid intake and discharge passagemeansalternately communicating with the piston chamber of. said motor, thelubricant discharge passage means and the motive iluid intake passagemeans having terminals loted In adiacency and communicable with a commonpassage through which motive fluid ilovs. and said pump constantlyoperating to eil'ect its lubricant pumping function to dischargelubricant through said discharge passage means to said common passageduring now o! motive iluid in said common passage.

WARREN NO'BII.

